LASERLYTE LASER TRAINER CARTRIDGE. Integrated snap cap Firing pin activated switch denotes bullet impact Fits 9mm Chamber.LaserLyte has been a leading innovator in laser technologies for several years. Now they are introducing one of their latest designs from the LaserLyte research team. The LaserLyte Pistol cartridge! The LaserLyte pistol trainer cartridge is designed to be installed in the chamber of your firearm. These cartridges are caliber specific and allow you to use your own firearm in conjunction with the Trigger Tyme Training system. Using a LaserLyte training system instead of going to the range can save you time and money. It's a great investment in order to keep your skills sharp on a rainy day, and also a great way to train new shooters who may be scared of recoil and noise. Check out the LaseryLyte Trigger Time training system, it is hands down the best training tool on the market today.